I'm using the Protos X PX-TCP1 buss couplers with the Productivity 3000. I have no issues with one buss coupler, But I need to add two more. The issue I'm having is when I configure the two new buss couplers the both start in the same Modbus range as the first one. So all three couplers start with Input range 400001 and output range 402049.